Love unfullfilled

I am in love with my boyfriend and that he loves me back. But his family members are pig-headed and won't allow us to marry. I don know how to change their mind. My parents don't know about my relationship with him and have started searching for suitable grooms. I am so scared. I don't want to lose him and neither does he want to leave me. I feel so very depressed. Eloping is not an option. What should I do???